Consequences of genetic erosion on fitness and phenotypic plasticity in European tree frog populations (Hyla arborea).
Fiche du document
2011
Ce document est lié à :
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1420-9101.2010.02138.x
Ce document est lié à :
info:eu-repo/semantics/altIdentifier/pmid/20964778
Ce document est lié à :
info:eu-repo/semantics/altIdentifier/pissn/1420-9101[electronic], 1010-061X[linking]
Ce document est lié à :
info:eu-repo/semantics/altIdentifier/urn/urn:nbn:ch:serval-BIB_8FA05FBD65281
info:eu-repo/semantics/openAccess , Copying allowed only for non-profit organizations , https://serval.unil.ch/disclaimer
Mots-clés
inducible defence; habitat fragmentation; costs; environmental stress; inbreeding; heterosisSujets proches
Geologic erosionCiter ce document
E. Luquet et al., « Consequences of genetic erosion on fitness and phenotypic plasticity in European tree frog populations (Hyla arborea). », Serveur académique Lausannois, ID : 10.1111/j.1420-9101.2010.02138.x
Métriques
Partage / Export
Résumé
The detrimental effects of genetic erosion on small isolated populations are widely recognized contrary to their interactions with environmental changes. The ability of genotypes to plastically respond to variability is probably essential for the persistence of these populations. Genetic erosion impact may be exacerbated if inbreeding affects plastic responses or if their maintenance were at higher phenotypic costs. To understand the interplay 'genetic erosion-fitness-phenotypic plasticity', we experimentally compared, in different environments, the larval performances and plastic responses to predation of European tree frogs (Hyla arborea) from isolated and connected populations. Tadpoles from isolated populations were less performant, but the traits affected were environmental dependant. Heterosis observed in crosses between isolated populations allowed attributing their low fitness to inbreeding. Phenotypic plasticity can be maintained in the face of genetic erosion as inducible defences in response to predator were identical in all populations. However, the higher survival and developmental costs for isolated populations in harsh conditions may lead to an additional fitness loss for isolated populations.